EP 4370828 A1 20240522 - WAVEGUIDE ILLUMINATOR HAVING SLAB WAVEGUIDE PORTION
Title (en)
WAVEGUIDE ILLUMINATOR HAVING SLAB WAVEGUIDE PORTION
Title (de)
WELLENLEITERBELEUCHTUNGSVORRICHTUNG MIT EINEM SCHICHTWELLENLEITERTEIL
Title (fr)
ILLUMINATEUR À GUIDE D'ONDES AYANT UNE PARTIE GUIDE D'ONDES DE DALLE
Publication
Application
Priority
- US 202163222224 P 20210715
- US 202117481227 A 20210921
- US 2022037357 W 20220715
Abstract (en)
[origin: WO2023288092A1] A waveguide illuminator includes adjacent linear and slab waveguide areas. An input light beam is guided in a linear waveguide, is split into a plurality of sub-beams to propagate in individual linear waveguides to a slab waveguide area and form an output light beam in the slab waveguide area. An array of out-couplers is disposed in the slab waveguide area. The array of out-couplers out-couples portions of the output light beam forms an array of out-coupled beam portions for illuminating a display panel. Locations of the array of out-couplers are coordinated with locations of individual pixels of the display panel, thereby improving efficiency of light utilization by the display panel.
IPC 8 full level
F21V 8/00 (2006.01); G02B 5/18 (2006.01); G02B 6/12 (2006.01); G02B 6/124 (2006.01); G02B 27/00 (2006.01); G02B 27/01 (2006.01); G02B 27/10 (2006.01); G02B 27/42 (2006.01)
CPC (source: EP)
G02B 6/0013 (2013.01); G02B 6/0035 (2013.01); G02B 27/0081 (2013.01); G02B 27/0172 (2013.01); G02B 27/106 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2023288092 A1 20230119; EP 4370828 A1 20240522; TW 202305427 A 20230201
DOCDB simple family (application)
US 2022037357 W 20220715; EP 22751946 A 20220715; TW 111119508 A 20220525